Kailyn reveals her plans; Leah takes Ali to a specialist; and Jenelle receives disappointing news.
Kailyn and Javi get married; Chelsea returns to beauty school.
Jenelle finds out she's pregnant in the Season 5 premiere. Later, Leah struggles with Ali's medical diagnosis.
Jenelle meets a new guy; Chelsea starts beauty school; and Leah goes on vacation.
Jo and Kailyn argue about Isaac's schedule; Jenelle moves in with her new boyfriend; and Leah learns that Ali will need to use a wheelchair.
Jenelle moves in with Nathan in Myrtle Beach, S.C.; Kailyn and Javi make an offer on a house in Delaware.
Kailyn prepares for her wedding; Jenelle and Nathan decide to have a baby; and Chelsea celebrates her 22nd birthday.
Chelsea throws a party for Aubree's 4th birthday; Kailyn and Jo go to court; and Jeremy returns home after passing out at work.
Kailyn has a meltdown; Aubree meets Adam's new baby; and Jenelle discusses a plea bargain with her lawyer.
Adam angers Chelsea with a visitation request; Jenelle has an unexpected surgery.
Kailyn breaks down when she realizes her mom won't be at her wedding; Chelsea takes Aubree to her first dance class.
Chelsea lands a job; Kailyn and Javi celebrate their wedding; and Jenelle accepts a plea deal.
Ali tests out her wheelchair; Leah struggles with Jeremy's absence; and Jenelle and Nathan receive exciting news.
Kailyn's baby is born; Leah and Jeremy work on their relationship; and Nathan is arrested.
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